Spectrex Series 300 Open-Path Gas Detection System - Manual (Page 25)

Spectrex Inc. - SafEye TM 300 Gas Detector Manual – TM 794100, Rev. D, May 2004
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Table 9 describes SW2 DIPswitches position and the required function for setting
the detector according to the necessary configuration
Table 9. SW2 DIPswitches Configuration
Switch
No.
Switch Definition Off
position
On position Default
setting
1 Address bit 0 (LSB) 0 1 off
2 Address bit 1 0 1 off
3 Address bit 2 0 1 off
4 Address bit 3 0 1 off
5 Address bit 4 0 1 off
6 Address bit 5 (MSB) 0 1 off
7 4-20mA direction
setting (1) N/A 4-20mA output at source
position on
8 4-20mA direction
setting (2) N/A 4-20mA output at source
position on
Alarm Options Selection Switch
This switch is used for the following function setting:
•
Selection of the Alarm status to be latched or to auto-reset after the Alarm
disappears.
•
Selection between two different 4-20mA reading modes, continuous
analog reading or discrete level reading which appropriate to the
detector’s status.
This switch also enables impedance matching to the serial link by providing a
connection to a loading resistor through the switch.